Hammerhead



FIG. 1 is a perspective view of a hammerhead, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a front elevational view thereof, the rear elevational view being a mirror image of the front elevational view; and,

FIG. 7 is a cross-sectional view thereof taken along line 7—7 of FIG. 2. 

The ornamental design for a hammerhead, as shown and described. 